JP-7855291-B2 - Computer-aided design program for transparent orthodontic appliances

JP7855291B2JP 7855291 B2JP7855291 B2JP 7855291B2JP-7855291-B2

Inventors

パクソンウォン
シムミヨン

Assignees

オーディーエスカンパニーリミテッド

Dates

Publication Date: 20260508
Application Date: 20230810
Priority Date: 20220819

Claims (8)

Step (S01): Generate and save multiple dental arch images in which the teeth to be straightened are sequentially moved and set for each orthodontic stage; Step (S02): Display any one dental arch image from the multiple dental arch images; Step (S03): In the dental arch image displayed in step S02, set a lateral reference line for each tooth in order to determine the overall shape of the transparent orthodontic appliance, and display this line; Step (S04): Set a cutting line that is formed at a certain distance in the gum direction from the reference line, and in the dental arch image displayed in step S02, set a cutting line corresponding to the end of the orthodontic appliance, and display this line; Step (S05): Display a first treatment image showing the transparent orthodontic appliance, which encloses the upper and lower dental arches according to the cutting line set in step S04, semi-transparently placed over the upper and lower dental arches; Step (S06): Inputting the overall spacing value between the dentition and the clear orthodontic appliance in the first treatment image; Step (S07): Reflecting the spacing value input in step S06 and displaying a new second treatment image; Step (S08): Selecting teeth to be straightened in the upper and lower dentition, and correcting the spacing value between the teeth and the inner surface of the clear orthodontic appliance for the portion of the clear orthodontic appliance that contacts the selected teeth to a spacing value smaller than the spacing value input in step S06; Step (S09): Reflecting the spacing value corrected in step S08 and displaying a new third treatment image; Step (S10): Inputting the overall thickness value of the clear orthodontic appliance; Step (S11): Reflecting the thickness value input in step S10 and displaying a new fourth treatment image; A program for designing a transparent orthodontic appliance using a computer stored on media, characterized in that it performs the following steps: selecting teeth to be corrected in the upper and lower dentition, and modifying the thickness value of the portion of the transparent orthodontic appliance that contacts the selected teeth to a value greater than the thickness value in step S10 (S12); displaying a new fifth treatment image that reflects the thickness value modified in step S09 (S13); and saving the fifth treatment image generated in step S13 (S14).
Perform all steps from S01 to S014 as described in Section 1 above. The step (S101) involves choosing whether or not to add button-shaped attachments to the inside of the clear orthodontic appliance that comes into contact with the teeth being straightened; The step of choosing whether or not to add a hook-shaped attachment to the outside of the clear orthodontic appliance that comes into contact with the teeth being straightened (S102); If it is selected to add a button-shaped or hook-shaped attachment in steps S101 and S102, step S103 is to set the shape, size and mounting position of the selected button-shaped and hook-shaped attachments; Stage (S104) where the sixth treatment video, modified according to stage S103, is displayed; The stage in which the 6th treatment video generated in stage S104 is saved (S105); A program for designing transparent orthodontic appliances using a computer, characterized by being stored on media, to perform these tasks.
Those described in paragraph 1 or 2, The aforementioned reference line is, In the case of the upper jaw teeth, It is formed at one of the following locations: the lower end of the tooth, the point where the tooth bulges, or the boundary between the tooth and the gum. In the case of the mandibular dentition, It is characterized by being formed at one of the following locations: the upper end of the tooth, the point where the tooth bulges, or the boundary between the tooth and the gum. A program that uses computers to design transparent orthodontic appliances.
In claim 3, The transparent orthodontic device is characterized in that the portion that comes into contact with the tooth to be straightened, which requires rotational correction, includes a step (S201) to further reduce the spacing value set in the direction of pushing the tooth, or a step (S202) to further increase the set thickness value. A program that uses a computer to design transparent orthodontic appliances.
In claim 3, Regarding a portion of the orthodontic appliance that comes into contact with a tooth requiring extrusion, The method further includes a step (S301) to further reduce the spacing value for a portion corresponding to a maximum length of 2 mm in the gingival direction from the reference line corresponding to the tooth protrusion; and a step (S302) to display it according to the spacing value corrected in step S201. A program that uses a computer to design transparent orthodontic appliances.
In claim 4, The aforementioned S12 step is, The input thickness value is determined within the range of 0.3 mm to 0.7 mm. Characterized by being stored on media , A program that uses a computer to design transparent orthodontic appliances.
In claim 5, The aforementioned S12 step is, The input thickness value is determined within the range of 0.3 mm to 0.7 mm. A program that uses a computer to design transparent orthodontic appliances.
In claim 6 or claim 7, The process further includes the step (S15) of transmitting the fifth and sixth treatment videos saved in steps S14 and S105 to the patient's terminal. A program that uses a computer to design transparent orthodontic appliances.

Description

This invention relates to transparent orthodontic appliances used for orthodontic treatment, and more particularly to a method and program for designing transparent orthodontic appliances using a computer. Specifically, this program uses a 3D scanner to scan the patient's oral structure, generates and stores information related to the treatment images, and simultaneously displays the stored tooth images and the designed clear orthodontic appliance to design a clear orthodontic appliance that is optimized for the teeth to be treated. The manufacturing process for transparent orthodontic appliances directly produced with a 3D printer can be divided into two stages: a setup stage where the teeth to be straightened are moved (and/or rotated) to the target location, and a design stage where the transparent orthodontic appliance is designed according to each setup stage. This invention relates to a program for designing transparent orthodontic appliances according to each stage of tooth movement setting for orthodontic treatment. The conventional method for fabricating orthodontic appliances is as follows: First, the practitioner understands the patient's oral structure and then creates a dental model that is identical in shape to the teeth. This dental model is typically created by taking an impression of the patient's oral structure and then using materials such as plaster. The conventional technique involves creating a plaster dental model in this manner, then using a molding machine to press a sheet of polyol material vertically at high temperature to create a transparent orthodontic appliance suitable for the patient. This manufacturing method requires manual work involving the cooperation of a doctor and a dental technician, and because it is carried out by a skilled dental technician, it takes a lot of time and effort, resulting in the problem of increasing the cost of manufacturing orthodontic appliances. On the other hand, in recent years, a method has become widely used that utilizes 3D scanners to scan a patient's oral structure, save the information, and create a dental model based on that saved information. This method is more advanced than the conventional method of directly taking impressions of the teeth to create a dental model in order to understand the patient's tooth structure. In other words, dental clinics send 3D scan data of the patient's tooth structure to a dental laboratory, which then creates a dental model based on the received information and fabricates the clear orthodontic appliance by pressing it into place. All of the methods described above involve first creating a dental model and then manufacturing the orthodontic appliance based on it. These methods differ from the present invention, which does not require a dental model because it utilizes a 3D printer to directly output the orthodontic appliance. This invention relates to a program for designing transparent orthodontic devices that are directly manufactured using a 3D printer. Figure 1 shows the design procedure for a transparent orthodontic appliance according to the present invention.Figure 2 shows the design procedure for the attachment according to the present invention.Figure 3 shows the change in orthodontic force over time according to the thickness of the clear orthodontic appliance.Figure 4 shows a transparent orthodontic device according to the present invention, with a button-shaped attachment.Figure 5 shows a transparent orthodontic device according to the present invention, in which a hook-shaped attachment is formed.Figure 6 shows an embodiment of the transparent orthodontic device according to the present invention.Figure 7 shows another embodiment of the transparent orthodontic device according to the present invention. The present invention includes the following steps. The process involves generating and saving multiple dental arch videos in which the teeth to be corrected are sequentially moved according to each orthodontic stage (S01), displaying an arbitrary dental arch video from among the multiple dental arch videos (S02), setting a lateral reference line for each tooth in the dental arch video displayed in step S02 to determine the overall shape of the transparent orthodontic appliance and displaying it (S03), setting a cutting line that is formed at a predetermined distance away from the reference line in the gingival direction and corresponds to the end of the orthodontic appliance in the dental arch video displayed in step S02 and displaying it (S04), displaying a first treatment video in which a transparent orthodontic appliance enclosing the upper and lower dental arches is placed over the dental arch in a semi-transparent state based on the cutting line set in step S04 (S05), inputting the overall spacing value between the dental arch and the transparent orthodontic appliance in the first treatment video (S06), and S06 The process includes the steps of: (S07) the input interval values are refle